Locking mechanism



March 5, 1929; EN

LOCKING- MECHANISM orlgmal Flled J 16 1922- s Sheets-Sheet 1 LOCKINGMECHANISM March 5, 1929. H. HANSEN Re. 17,225

Original Filed June 16,1922 7 3 Sheets-Sheet 2 a avwemtoz HQHANsENLOCKING IECHANISI March 5, 1929.

"s Sheets-Shdat 5 Original Filed June 16 1922 avwewtoz Reissued Mar. 5,1929.

, UNITED STATES i Re.l7,225 PATENT oF -"icE."

HERMAN HANSEN, OF NEW YORK, N. Y., ASSIGNOR TO FRANCIS KEIL & SON, INC.,A

. CORPORATION OF NEW YORK.

LOCKING MECHANISM.

Original No.

My invention relates to a mechanism to be locked, the construction ofwhich is adapted for many different uses where great security isdesired.

The object of my invention is to provide a lock which is so constructedthat a bolt operated thereby is rotated in order to bring a lateralprojection thereon into engagement with a bolt-socket so as to preventthe direct longitudinal withdrawal of the same without previouslyrotating the bolt to disentlie lateral projection from the boltsocket.Further objects of my invention will appear from the detaileddescription contained hereinafter.

While my invention is capable of embodiment in many different forms, forthe purpose of illustration I have shown only one form thereof in theaccompanying drawings, in which- Figure 1 is arear elevation of a lockmade in accordance with my invention Fig. 2 is a front elevation of theinterior of the locking mechanism showing the lock' in unlockedposition;

Fig; 3 is a similar view showing the bolts extended before the rotation.thereof;

Figt is another view of the same kind but showing the bolts after havingbeen rotated;

Fig. 5 is an end elevation of the locking mechanism showing the boltsextended and after having been rotated;

Fig. 6 is a front elevationof the interior of the lock casing showingthe sliding plates removed;

Fig. 7 is a front elevation of the main sliding plate showing the tworotatable bolts at tached thereto;

Fig. 8 is a side elevation of the sa1ne-shmw ing the bolts removedtl'ierefrtnn;

Fig. 9 is a front elevaiionof the auxiliary sliding plate;

Fig. 10 is a side elevation of the same";

' Fig. 11. is a side'elevation of the retaining plate used for holdingthe bolts in engagement with the sliding plat-es;

Fig. 12 is an elevation of the cover plate and the lock-operating leverthereon;

Fi 13 is a side elevation showing the boltsocket member:

Fig. 14 is a front elevation of the same:

Fig. is a side elevation showing the key receiving barrel for operatingthe lock, the

1,605,893, dated November 2, 1926, Serial No. 568,724, filed June 16,1922. Application for reissue filed July 28, 1927.

Serial No. 209,152.

barrel casing for enclosing the same and a key for the lock;

Fig. 16 is a front elevation of the same showingthe key removed; and

Fig.1? is a side elevation of said key.

In the drawings, I have shown a key 1 (F g. 17) adapted to extend into abarrel 2 (Figs. 15 and 16) arranged to rotate within an outer casing 3which has screw-holes 4: for securing the lock within the outer portionof a door. "lVithin the barrel casing are the usual tumblers designedfor controlling the rotation of a key of this type. Secured to therotatable barrel 2 there is a lock-operating arm 5 having an enlargedforward end (i which is retained in engagement with the barrel 2 bymeans of a slotted disc 7 secured to the barrel 2 by screws 8. Thelock-operating arm 5, at its rearward end, engages with a slot 9 in arotating arm 10 pivoted in a cover plate 11 (see Fig. 12).

The arm 1.0, to operate the lock, is provided with a rearwardlyextending crank pin 12 (Fig. 1.2) which is so positioned that, when thearm or' crank 10 is swung about its pivot, the pin 12 enters between theraised side walls (see'Fig. 9) of a slot 13 (Fig. 2) in an auxiliarysliding plate 14 having lateral upper and lower (as viewed in thedrawings) guide flanges 15 (Figs. 9 and 10) guiding the said platewithin a main sliding plate 16 (Figs. 2 and 7) provided with flanges 17at the top and bottom (as viewed in the drawings) of the same which fitwithin .guideways 18 in a' lock-casing 19. At one side of the auxiliarysliding plate let there is an arm 20 (Fig. 9) extending through a slot21 (Fig. 8) in the form of a cross located in a forward flange 22 on themain sliding plate 16. said arm 20 having upwardly and downwardly (asviewed in the drawings) directed pins 23 and 24. to engage with upperand lower (as viewed in the drawings) bolts 25 and 26' (Figs. 2. 3. land 7) respectively which have spiral guideways 27 and 28 respectivelyfor engagement with said pins. The upper and lower bolts 25 and 26 areconstructed alike except that the upper bolt 25 has a laterally directedstop 29 to cooperate with a projection 30 in the interior of thelock-casing 19 to prevent the rotation of the bolts except when fullyextended, in the manner hereinafter clescribed.

with a T-shaped projection 31 which is engaged with the main slidingplate 16 by mserting the same through the slot 21 (Fig. 8) in theforward flange 22. Each of the bolts, furthermore, has at its outer endtwo lugs 32 at opposite sides of the bolt to engage within the interiorof a bolt-socket member 33 (Figs. 13 and 14) adapted to be carried bythe door casing, or frame, said bolt-socket member having a rectangularopening 34 in a plate 35. It will be noted that the bolt-socket member33 has a plurality of screw-holes 36 adapted to be rotated by aknurled'head 41 (Fig. 1) extending outwardly to the rear of thelock-casing, has been passed through a heart-shaped slot 42 in the mainsliding plate 16, the auxiliary sliding plate 14 is introduced withinthe main sliding plate 16 in such amanner that the pins 23 and 24 passthrough the cross-shaped slot 21 into engagement with the spiralrecesses 27 and 28 on the bolts 25 and 26 and in such a manner as tobring the slot 13 over the pin 39. The arm 40, furthermore, has a slightextension 42 (Fig. 6) cooperating with a spring 42 supported within thelock-casing 19 in such a manner as to tend to retain the lockingmechanism at one or the other end of its path of movement, so as to makethe locking and unlocking movement smoother in operation.

In order to hold the two sliding plates and tumblers in engagement inthis manner a retaining plate 43, (Fig. 11), having two circularopenings 44 fitting over the rear ends of the bolts 25 and 26 and arecess 45 fitting over the arm 20, is secured to the forward flange 22of the main sliding plate 16 by means of a screw 46.

It will be noted that the lock-casing 19 has a number of screw-holes 47for securing it to the door, which is to be fastened by the lock,

and that the casing 19 has screw-holes 49 and the cover plate 11 hasscrew-holes 49 so that screws 50 may be inserted for holding the coverand lock-casing together. It will be noted, also, that the cover. plate11, when held in place in the lock-casing 19 by the screws 50, alsoholds in their proper position the sliding plates 14 and 16 by contactwith the rear portion of theauxiliary sliding plate 14.

In the operation of the lock, being inserted in the door, will controlthe the key 1,

tumblers within the barrel 2 so as to permit the rotation of the latterand, as a result, the rotation of the lock-operating arm 5 so as tobring about the swinging of the crank pin 12 into engagement with andbetween the extended position. During this entire move- I ment of thetwo sliding plates 14 and 16 and the bolts 25 and 26, the lateral stop29, on the upper bolt 25, is in engagementwith the projection 30 in thelock-casing so that these four parts move in unison in this portion ofthe movement of the locking parts.

As soon as the outermost position of exten sion of the bolts has beenreached (as in Fig. 3), a further rotation of the key and the crank pin12 does not result in the lateral movement of the main sliding plate 16carrying the bolts 25 and 26 because of the fact that the lateral stop29 is now in contact with the side (the left-hand end wall as viewed inFig. 4) of the lock-casing but such further rotation of the key resultsin the movement of the auxiliary sliding plate 14 relative to the mainsliding plate 16 and the consequent rotation of the bolts 25 and 26 (seeFigs. 4 and 5) owing to the presence of the spiral guideways therein,which are in engagement with the upper and lower pins 23 and 24connected to the auxiliary sliding plate. This rotation of the bolts 25and 26 results in the lugs thereon being moved out of alinement with therectangular opening 34 in the boltinclination of the slots in the bolts25 and 26..

F urtheri'l'iore, the bolts cannot be sawed off when so extended becauseofthe hardened steel cores 37.

In unlocking the lock, the movement of key 1 in the reverse directionwill rotate the bolts 25 and 26 until they are in alinement with therectangular opening 34, and then withdraw the bolts Within thelockcasing 19 by a reverse series of movement. Should anyone be in theinterior of the room, or compartment, locked by the lock it is possiblefor him to release the lock by'operating the knurled head 41 without thenecessity of using a key.

WVhile I have described my invention above in detail I wish it to beunderstood that many bolt and a key actuated member adapted to move saidplates by operating upon the plate having the spiral connection to thebolt.

2. A lock having a bolt andbolt-extendingandrotating devices, soarranged that the bolt-rotating devices are brought into operationEljlitfil the bolt-extending movement has been" effected, comprisingmain and auxih iary sliding plates, a spiral connection between one ofsaid plates and said bolt and a key actuated member adapted to move saidplates by operating upon the plate having the spiral connection-to thebolt.

3. A lock having a bolt and bolt-extend ing-and-rotating devices,comprising main and auxiliary sliding plates, a spiral connectionbetween one of said plates and said bolt in the form of a spiral grooveon said bolt and an extension on said auxiliary sliding plate projectingtherein.

4:. A lock having a bolt and bolt-extending-and-rotating devices, soarranged that the bolt-rotating devices are brought into operation afterthe bolt-extending movement has been effected, comprising main andauxiliary sliding plates, a spiral connection between one of said platesand said bolt in the form of a spiral channel on said bolt and anextension on said auxiliary sliding plate engaging therewith.

5. A lock having a bolt and bolt-extend ing-and-rotating devices,comprising main and auxiliary fiat sliding plates, a spiral connectionbetween one of said plates and said bolt in' the form of a spiralguideway on said bolt, an extension on said auxiliary sliding plateengaging therewith and a stop on said bolt controlling the rotaryposition thereof.

6,A lock having a. bolt and bolt-extending-anth'rotating devices, soarranged that the bolt-rotating devices are brought into operation afterthe bolt-extending movement has been etlected, comprising main andauxiliary sliding plates, a spiralconnection between one of said platesand said bolt in the form of aspiralguideway on said bolt, an extensionon said auxiliary sliding plate engaging therewith and a lug on saidbolt controlling the rotary position thereof.

7. A lock h ving a bolt and bolt-extending-and-rotating devices,comprising main and auxiliary sliding platesand a spiral connectionbetween one of said plates and said bolt, the bolt being attached to themain sliding plate and the auxiliary plate being movable with regardthereto and having an-arm extending into engagement with said bolt.

8. A lock having a bolt and bolt-extending-and-rotating devices, soarranged that I the bolt-rotating devices are brought into regardthereto and having an arm extent/ ing into engagement with said bolt.

9. A lock having a bolt and bolt-extending-androtating devices,comprising main and auxiliary sliding plates and a spiral connectionbetween one of said plates and said bolt in the form of a spiralguideway on said bolt and'a lug on said auxiliary sliding plate engagingtherewith, the bolt being attached to the main sliding plate and theauxiliary plate'being movable withregard thereto.

10. A lock having a bolt and bolt-extending and-rotating devices, soarranged that the bolt-rotating devices are brought'into operation afterthe bolt-extending movement has been effected, comprising main andauxiliary sliding plates and a spiral connection between one of saidplatesand said bolt in the form of a spiral guideway on said bolt and anextension on said auxiliary sliding plate engaging therewith, the boltbeing attached to the main sliding plate and the auxiliary plate beingmovable with regard thereto. 0

11. A look having a bolt and bolt-extending-and-rotating devices,comprising main and auxiliary sliding plates and a spiral connectionbetween one of said plates and said bolt in the form of a spiralguid-eway on said bolt, an extension on said auxiliary sliding plateengaging therewith and a lug on said bolt controlling the. rotaryposition thereof,

the bolt being attached to the main sliding plate and the auxil aryplate being movable with regard thereto.

12. A lock having a bolt and bolt-extending-and-rotatingdevices, soarranged that the bolt-rotating devices are brought into operation afterthe bolt-extending movement has been effected, comprising main andauxiliary sliding plates and a spiral connec- .tion between one of saidplates and said bolt in the form of a. spiral guideway on said bolt, anextension on said auxiliary sliding plate engaging therewith and a stopon said bolt controlling the rotary position thereof, the bolt beingattached to the main slidingplate and the auxiliary plate being movablewith regard thereto.

13. A lock having a plurality of bolts and bolt-extending-and-rotating,evices, comprising main and auxiliary sliding plates and a spiralconnection between one of said plates and said bolts, the bolts beingcarried by the main sliding plate and the auxiliary plate being movablewith regard thereto and havmg an arm extending into engagement with tit)said bolts, and a locking plate for securing the bolts and slidingplates together.

14. A lock having a plurality of bolts and bolt-extending-and-rotatingdevices, so arranged that the bolt-rotating devices are brought intooperation after the bolt-extending movement has been effected,comprising main and auxiliary sliding plates and a spiral connectionbetween one of said plates and said bolts. the bolts being carried bythe main sliding plate and the auxiliary plate being movable with regardthereto and having an arm extending into engagement with said bolts, anda locking plate for securing the bolts and sliding plates together.

15. A lock having a plurality of bolts and bolt-extending-and-rotatingdevices, comprising main and auxiliary sliding plates and a spiralconnection between one-of said plates and said bolts in the form'of aspiral guideway on the bolts and an extension on said auxiliary slidingplate engaging therewith, the bolts being carried by the main slidingplate and the auxiliary plate being movable with regard thereto, and alocking plate for securing the bolts and sliding plates together.

16. A lock having a plurality of bolts and bolt-extending-and-rotatingdevices, so arranged that the bolt-rotating devices are brought intooperation after the bolt-extending movement has been effected,comprising main and auxiliary sliding plates and a spiral connectionbetween one of said plates and said bolts in the form of a spiralguideway on said bolts and an extension on said auxiliary sliding plateengaging therewith, the bolts being carried by the main sliding plateand the auxiliary plate being movable with re gard thereto, and alocking plate for securing the bolts and sliding plates together.

17. A look having a plurality of bolts and bolt-extending-and-rotatingdevices, comprising main and auxiliary sliding plates and a spiralconnection between one of said plates and said bolts in the form of aspiral guide-- way on said bolts, an extension on said aux- .iliarysliding plate engaging therewith and a stop on said bolts controllingthe rotary position thereof, the bolts being carried by the main slidingplate and the auxiliary plate being movable with regard thereto, and alocking plate for securing the boltsand sliding plates together.

.18. A lock having a plurality of bolts and bolt-extending-and-rotatingdevices, so arranged that the bolt-rotating devices are brought intooperation after the bolt-extending movement has been effected,comprising main and auxiliary sliding plates and a spi 'al connectionbetween one of said plates and said bolts in the form of a spiralguideway on said bolts, an extension on said auxiliary sliding platesengaging therewith and a stop on said bolts controlling the rotaryposition thereof, the bolts being carried by the main sliding plate andthe auxiliary plate being I movable with regard thereto, anda lockingplate for securing the bolts and sliding plates together. 19. A lockhaving a bolt, and bolt extending and rotating devices comprising mainand auxiliary sliding plates, a spiral connection between one of saidplates and said bolt, the latter having a hard steel core adjacentexposed portions of the bolt when in locking position, and a keyactuated member adapted to move said plates by operating upon the platehaving the spiral connection to the bolt. 20. A lock having a pluralityof bolts and bolt extending and rotating devices for operating the same,comprising main and auxiliary sliding plates, and spiral connectionsbetween one of said plates and said bolts.

21. A lock having a bolt, means including a plate for controlling theforward direction of anovement ofthe belt, a sliding plate having aspiral connection with said belt for rotating the same, and anoscillating crank for controlling the movement of the sliding plate.

x 22. A lock casing having a rotatable bolt extendible out of saidcasing; a projection upon the bolt; means for controlling the forwarddirection of movement of the bolt, said means including a plate forminga wall of said casing and provided with guiding means along which theprojection on the bolt moves as the latter is extended, said guidingmeans being shaped to prevent the rotation of the bolt until the latterhas been extended sufficiently to carry said projection beyond saidguiding means; a sliding pl-ate slidably guided within said casing andhaving a spiral connection with. said. bolt for rotating-the same; acrank arm pivotally mounted in the front wall of said casing; a crankarm pivotally mounted in the back wall of said casing; means forconnecting each crank arm to said slidable plate; and a single springmeans for etlesting a completion of the sliding movement of saidslidable plate in response to actuation of the latter by either of saidcrank arms.

23. A lock casing having a rotatable bolt extendible out of said casing;a projection upon. the bolt; means for controlling the forward directionof movement. of the bolt, said means including a plate forming a wall ofsaid casing and provided with guiding means along which the projectionon the bolt moves as the latter is extended, said guiding means beingshaped to prevent the rotation of the bolt until the latter has beenextended sufli eiently to carry said projection beyond said guidingmeans; a sliding plate slidably guided within said casing and having aspiral connection with said bolt for rotating the same; a crank armpivotally mounted in the front wall of said casing, said crank armhaving connection with said slidable plate; a detachable cover plate forsaid casing; a crank arm pivotally mounted therein; and means for makingdetachable connection between said sliding plate and said last-mentionedcrank arm.

24c. A look casing having a rotatable bolt extendible out of saidcasing; a projection upon the bolt; means for controlling the forwarddirection of movement of the bolt, said means including a plate forminga wall of said casing and provided with guiding means along which theprojection on the boltmoves as the latter is extended, said guidingmeans being shaped to prevent therotation of the bolt untilthe latterhas been extended sufficiently to carry said projection beyond sa1dguiding means; a sliding plate. slidably guided within said casing andhaving a spiral connection with said bolt for rotating the same, saidsliding plate having a slot extending substantially transversely toits'dix plate.

rection of movement; and a crank arm pivotally mounted in a wall of saidcasing and having acrank pin for engagement in sa d slot for efiectingsliding movement of sa1d 25. extendible out of said casing; a pro ectionupon the bolt; means for controlling the forward direction of movementof the bolt, sa1d means'including a plate forming ajwall of said casingand provided with guiding means being shaped to prevent along which theprojection on the bolt moves as the latter is extended, said guidingmeans the rotation of the bolt until the latter hasbeen extendedsufliciently to carry said projection beyond sa1d guiding means; asliding plate slidably guided within said casing and having a sp ralconnection with said bolt for rotating the same, said sliding platehaving a slot extending substantially transversely to its direction ofmovement; a crank arm pivotally mounted in a wall of said casing andhaving a crank pin --for engagement in said slot for effecting slidingmovement ofsald plate; and a spring-operating upon said crank arm tocause the latter to complete its movement about itspivot and to effectcompletion-of the sliding movement of sa1d sliding plate 26. A lockcasing having a rotatable bolt extendible out of said casing; a proection upon the bolt; means for controlling the forward direction ofmovement of the bolt, said means including a plate forming a wall'ofsaid casing and provided with guiding means along which the projectionon the bolt moves as the latter is extended, said, guiding means beingshaped to prevent the rotation of the bolt until the latter ciently tocarry said projection beyond sa1d guiding means; a slldmg plate slidablyguided within said casing and having a spiral connection with -said boltfor rotating the same; a crank and pivotally mounted in the A lookcasing having a rotatable bolt' said casing and means along whlc-h theprojection on the bolt has been extended sufli sliding plate andsaidlast-mentioned crank arm; and a single spring means for causlng 7both cranks to complete their effective move-;

ments about their respective pivots.

27; A lock casing having a rotatable bolt extendible out of said casing;a projection upon the bolt; means for controlling the forward directionof movement ofthe bolt, said means including a plate forming a wall ofsa1d casing and provided with guidlng means along which the projectionon the bolt moves as the latter is extended, said guiding means beingshaped to prevent the rotation of the bolt until the latter has beenextended suificiently to carry said projection beyond said guidingmeans; a sliding plate slidably guided within said casing and having aspiral connection with saidbolt for rotating the same; a crank armpivotally mounted in the front wall of said casing; a crank armpivotal-ly mounted in the'back wall of said casing; means for connectingeach crank arm to said slidable plate; and a single spring meansconnected to cause each crank to complete its effective movement aboutits pivot.

28. A lock casing having a rotatable bolt extendiblc out of said casing;a projection upon the bolt; means for controlling the forward directionof movement of thebolt, said means including a plate forming a wall ofprovided with guiding moves as the latteris extended, said guiding meansbeing shaped to prevent the rotationof the bolt until the latter hasbeen extended sufiiciently to carry said projection beyond said guidingmeans; a slidingplate slidably guided within said casing and having, aspiral connection with said bolt for rotating the same; a crank armpivotally mounted in the front wall of said casing; a crank armpivotally mounted in the back wall of said casing; means for connectingeach crank army to said slidable plate, said crank arms and saidslidable plate being related so that the" range of movement of thelatter is complete effected by either of said cranks by a'range ofoscillating movement from one side of its pivot to the other side of thepivot; and spring means for urging said-cranks, when they are operated,to complete their respective ranges of movement andoperativeirrespective of whether said cranks are operated in locking or unlockingdirection.

29. A lock casing having two rotatablebolts extendible outof saidcasing;- means for controlling the forward direction of movement of thebolts, said meansincluding a plate forming a wall of said casing; asliding plate slidably guided relative to said first-mentioned plate andhaving a portion extended toward and substantially centrally of saidbolts, said extended portlon carrying means having a spiralslot and pinconnection with said bolts for rotating the same.

30. A look casing having two rotatable bolts extendible out of saidcasing; means for controlling the forward direction of movement of thebolts, said means including a plate forming a wall of said casing; asliding plate slidably guided relative to sa d first-mentioned plate'andhaving a portion 'extended toward and substantially centrally of ,saidbolts, said extended portion carrying means having a spiral slot and pinconnection with said bolts for rotating t e same, and means restrictingthe range of extending movement of said two bolts to one that is lessthan the range of sliding movement of said sliding plate, thereby toenforce relative movement between said bolts and said sliding plateduring a portion of the movement l of the latter.

' mentioned plate and having a crank pin upon its one end, said slidableplate having a transversely extending slot with which said crank pinengages.

32 lock casing having two rotatable bolts extendible out of said casing;means for controlling the forward direction of movement of thebolts,.said means including a plate forming a wall of said casing; asliding plate slidably guided relative to said first-mentioned late ,andhavin a portion extended toward and substantial y centrally of saidbolts, said extended portion carrying means havinga spiral slot and pinconnectionwith said bolts'for rotating the same,

and means movable with said sliding plate I V for-rotatably supportingsaid bolts.

extended towar bolts extendible out of sai two rotatable casing; meansfor, controllin the forward direction of movement of t e bolts, saidmeans including 33'. A look casing havin a plate forming a wall of saidcasing; a sliding plate slidably guided relative to said first-mentionedlate and having a portion (f and substantially centrally of said bolts,said extended portion carrying means having a spiral slot and pinconnection with'said bolts for rotating the same, and means movable withsaid sliding plate and extending in the direction of-movement of saidbolts and providing bearin means for rotatably supporting said bolts.

34. A lock casing having two rotatable bolts extendible out of saidcasing; means for controlling the forward direction of movement of thebolts, said means includin a plate forming a wall of said casing; asliding plate slidably guided relative to said firstmentioned plate andhaving'a portion extended toward and substantially said bolts, saidextended portion carrying means having a spiral slot and pin connectionwith said bolts for rotating the same, a crank for actuating saidsliding plate, said crank being pivotally mounted invsaid firstmentionedplate and having a range of movement. to either side of its axis, saidcrank being connected to said sliding plate to move the latter; andspring means acting upon said crank to cause the latter to complete itsmovements to either side of its axis.

35'. A look casing having two rotatable bolts extendible out of saidcasing; means for controlling the forward direction of movement of thebolts, said means including a plate forming a wall of said casing; asliding plate slidably guided relative to said firstmentioned plate andhaving a portion extended toward and substantially centrally of saidbolts, said extended portion carrying means having a spiral slot and pinconnection with said bolts for rotating the same, a crank for actuatingsaid sliding plate, said crank being pivotally mounted in saidfirst-mentioned plate and having a range ofmovement to either side ofits axis, said crank being connected to said sliding plate to move thelatter; and a single spring mounted to react between one of said platesand said crank and centrally of acting to cause said crank to completeits movements to either side of its axis.

36. A lock casing having two rotatable bolts extendible out of saidcasing; means for controlling the forward direction of movement of thebolts,'said means including a late forming a wall of said casing; asliding plate slidably guided relative tosaid first-mentioned plate andhaving a porj tion extended toward and substantially centrally of saidbolts, said extendedportion carryin means having a spiral slot and pinconnection with said bolts for rotating the same, a crank for actuatingsaid sliding plate,

said crank being pivotally mounted in said first-mentioned plate andhaving a range of movement to eitherside of its axis, said crank I beingconnected to said slidingplate to. move the latter; and a spring actingupon said crank and connected therewith so that the effective armthrough which the spring acts increases as the effective arm of saidcrank decreases.

37. A lock casing having two rotatable bolts extendible out of saidcasing, means for controlling the forward direction of movement of thebolts, said means including a plate forming a wall of said casing; asliding plate slidably guided relative to said first-mentioned plate andhaving a portion extended toward and substantially centrally of said.bolts, said extended portion carrying means having a spiral slot andpin connection with said bolts for rotating the same; and meansextending transversely of said extended portion of said slidable platefor rotatably supporting said bolts.

88. A lock casing having a rotatable bolt extendible out of said casing;a projection upon the bolt; means for controlling the forward directionof movement of the bolt, said means including a plate forming a wall ofsaid casing and provided with guiding means i a crank arm for movingalong which the projection on the bolt moves as the latter is extended,said guiding means being shaped to prevent rotation of the bolt untilthe-latter has been extended sufliciently out of the casing; a slidingplate slidably guided within said casing and having a spiral connectionwith said bolt for rotating the same upon relative movementtherebetween;

and a spring acting upon said crank and connected therewith so that theeffective arm through which the spring acts increases as theefiective'arm of said crank decreases.

39. A lock casing having a rotatable bolt extendibl'e out of saidcasing; a projection upon the bolt; means for controlling the forwarddirection of movement of the bolt, sald -means including a plate forminga wall of said casing and provided with guiding means along which theprojection on the bolt moves as the latter is extended, said guidingmeans being shaped to prevent rotation of the bolt .until the latter hasbeen extended sufliciently out' of the casing; a sliding plate slidablyguided within said casing and having a spiral connection with said boltfor rotating the same upon relative movement therebetween; a crank arm"for moving said sliding plate;

a crankarm pivota-lly supported by said casing and having a crank pin,said sliding plate having a transversely extending slot with 'ing arange of oscillating movement toeither side of its axis; and springmeans acting upon said crank and connected therewith so that theeffective arm through which said spring means acts increases as theeflective arm of I 40. A lock casing having a rotatable bolt extendibleout of said casing; a sliding plate lying substantially in-a planesubstantially parallel to the front wall of said casing and having aspiral connection with said bolt for rotating the same upon relativemove- 7 ment therebetween; and means .for controlling the forwarddirection of movement of said sliding plate;

which said pin engages and said crank havthe bolt including a platesubstantiall parallel to said sliding plate, said secon -men tionedplate being constructed and arranged to prevent relative movementbetween said sliding plate and said bolt until the latter has beenextended a predetermined distance out of said casing, V

41. A look casing having a rotatable bolt extendible out of the casingand having guideways extending in the direction in which said bolt isextendible; a sliding plate slidably mounted relative to said guidewaysand provided with means at one end to assist in rotatably supportingsaid bolt-and with means forming a spiral connection with said bolt forrotating the same upon relative movement therebetween; means including aplate constructed and arranged to prevent said relative movement fromtaking place until said bolt has been extended a predetermined disallysupported by acwall 0i said casing and having a bearing member passingthrough the latter to permit operation of the crank from the exterior ofsaid casing; a sliding plate movable by said crank and having a.

connection therewith so as topartake of the full range of movement'ofthe crank and havmg a spiral connection with said bolt for rotating thesame upon relative movement therebetween; and means including a platecoacting with said sliding plate in the control of said bolt, saidsecond-mentioned plate extending substantially parallel to said slidingplate and acting to'prevent relative movement between the latter and thebolt until the bolt has'been extended a predetermined distance outofsaid casing and thereby control- {ing the forward direction of movementof the olt.

extendible out of said casing; a crank pivot ally supported by a wall ofsaid casing and having a bearing member passing through the latter topermit operation of the crank from the exterior of said casing; asliding plate movable by said crankand having a con-V nection therewithso as to partake of the full range of movement of the crank and having a43. A lock casing having a rotatable bolt bolt; said second-mentionedplate extending. substantially parallel to said sliding plate'and actingto prevent relative movement between the latter and the boltuntil .thebolt has been extended a predetermined distance out of said casing andthereby controlling the forward directionof movement of the bolt; and, a

spring for causing the completion of the sliding movements, in eitherlooking or unlocking direction, of said sliding plate e 44. A lookcasing having a pair of bolts, each rovided with a lateral extension,adapted to e extended out of an end wall of the easing; a main slidingplate slidably supported within said casing and having said boltspivotally secured thereto; and an auxiliary plate slidable relative tosaid main plate, said auxiliary plate and said bolts having camconnections therebetween adapted upon relative movement between saidplates to effect movement of said bolts about their pivots, thereby toswing the lateral projections on the bolts about the pivots of thelatter.

45. A lock casing having a pair of bolts, each provided with a lateralextension, adapted to be extended out of an end wall of the casing; amain sliding plate slidably supported within said casing and having saidbolts pivotally secured thereto; an auxiliary plate slidable relative tosaid main plate, said auxiliary plate, and said bolts having camconnections therebetween adapted upon relative movement. between saidplatesto effect movement of said bolts about their pivots, thereby toswing'the lateral projections on the bolts about the pivots of thePatter; and means for limiting the slidable movement of said main plateto a range less'than that of said auxiliary plate, thereby to effectrelative slidable movement therebetween. Y

46. A lock casing having a pair of bolts, each provided with a lateralextension, adapted to be extended out of an end wall of the casing; amain sliding plate slidably sup- )orted within said casing and havingsaid bolts pivotally secured thereto; an, auxiliary plate-slidablerelative to sai d' main plate, said auxiliary plate and said boltshaving cam connections therebetween adapted upon relative movementbetween said plates to effect movement of said bolts about their pivots,thereby to .swing the lateral projections on the bolts about the pivotsof the latter; means operable from theexterior of, said casing foreffecting movement of said slidable plates,

thereby to effect movement of said bolts out of or into said casing; andmeans for limit iiig the slidable movement of said main plate,-

thereby to cause said operating means to move said auxiliary platerelative to said main plate and hence relative to said bolts.

47. A lock casing having a pair of bolts, each provided with a lateralextension, adapted to be extended out of an end wall of the casing; amain sliding plate slidably supbolts pivotally secured thereto; anauxiliary plate slidable relative to said main plate,-

said auxiliary plate and said bolts having camconnections therebetweenadapted upon relative movement between said plates to effect movement ofsaid bolts about their pivots, thereby to swing the lateral projectionson the bolts about the pivots of the latter; means operable from theexterior of said casing for effecting movement of said slidable plates,thereby to efiect movement of said olts out of or into said casing, anda stop on one of said bolts adapted to engage the end wall of saidcasing through which said bolts are extended, thereby to limit the sliding movement of said main plate and hence to limit the extendingmovement of said bolts,

said operating means acting thereafter to move said auxiliary slidingplate relative to said main sliding plate, said cam means being therebymade efi'ective to swing said bolts and the lateral extensions thereonabout their pivots.

48. A look having a bolt and bolt extending and rotating devices, saiddevices including main and auxiliary sliding plates, saidbolt'beingpivotally attached to the main sliding plate and the auxiliaryplate being movable with respect to said main sliding plate, an arm onsaid auxiliary plate and extending in the directiorrof said? bolt, andcam means forming a connection b etween said bolt and said arm'andadapted upon relative thereto; and an'auxiliary sliding plate having anarm extending substantially between said bolts, said arm and said boltshaving coacting portions adapted upon relative.

movement between said sliding plate and said bolts to cause-said boltsto swing-about their pivots.

50. A lock casing having a pair of bolts each provided with a lateralprojection adjacent its outer end and adapted to be moved out of an endwall of said casing; a main sliding plate Within said casing and havingsaid bolts pivotally mounted with respect thereto; and an auxiliarysliding plate havlng an arm extending substantially between said bolts,said arm and said bolts having coacting portions adapted upon relativemovement between said sliding plate and said bolts to cause said boltsto swing about their pivots, said coacting portions being constructed toprevent swinging of saidbolts about their pivots in reverse directionunless relative movement therebetween takes place.

51; A lock casing having an end wall provided; with an opening and beingopen at its back; a bolt extendible out of said casing and through saidopening in the end wall thereof; guide-portionsin' said casing; a mainsliding plate slidably guided by said guide-portions and having saidbolt pivotguide-portions 1n all secured thereto; an auxiliary plateslidab e relative to said main plate, said auxiliary plate and said bolthaving coacting cam portions adapted upon relative movement between saidplates to effect movement of said bolt about its pivot; and a coverplate attachable to said casing for holding said main sliding plate inoperative relation to said guide-portions.

52. A look casing having a front wall, an end wall with an openingtherein, and being open at its back; a bolt extendible out of theopening in said end wall; a crank arm pivotally mounted in said frontwall and operable from the exterior of said casing; guideportions insaid casing; a main sliding plate slidably guided by saidguide-portions, said bolt being pivotally secured to said plate; anauxiliary plate slidably supported by said main sliding plate and makingdetachable connection with said crank arm,said auxiliary sliding plateand said bolt having cam connections adapted upon relative movementbetween said plates to swing said bolt about its pivot; and a coverplateattachable to said casing for holding saidmain sliding plate inoperative relation to said guide portions.

and for preventing movement of said auxiliary sliding plate in adirection to effect disengagement thereby from said crank arm. 53. Alock casing having an end wall provided with an opening and being openat its back; a bolt extendible out of said casing and through saidopening in the end wall thereof said casing; a main slid ing plateslidably guided by said guide-portions and having said bolt pivotallysecured thereto; an auxiliary plate slidable relative to said mainplate, said auxiliary plate and said bolt having coacting canr portionsadapted upon relative movement between said plates to effect movement ofsaid bolt about its pivot; a cover plate attachable to said casing forholding said main sliding plate in operative relation to saidguide-portions; and a crank arm pivotally mounted on said cover plateand makin detachable connection with one of said sliding plates foractuating the latter from the exterior of said casing.

54. A look casing having a front wall, an end wall with an openingtherein, and being open at its back; a bolt extendible out of theopening in said end wall; a crank arm pivotally mounted in said frontwall and operable from the exterior of said casing; guide-portions insaid casing; a main sliding plate slidably guided by saidguide-portions, said bolt being pivotally secured to said plate; anauxiliary plate slidably supported by said main sliding plate and makingdetachable connection with said crank arm, said auxiliary sliding plateand said bolt having cam connections adapted upon relative movementbetween saidplates to swm said bolt about its pivot; a cover plate attacable tosaid casing 55. A look casing having a front wall, an

end wall with an opening therein, and being open at its back; a boltextendible out of the opening in said end wall; acrank arm pivotallymounted in said front wall and oper able from the exterior of saidcasing; amain sliding plate slidably supported in saidcasing and havingsaid bolt pivotally secured;

thereto an auxiliary sliding plate in said I casing, said auxiliaryplate and said bolt having cam connections adapted upon relative '86movement between said plates to swing said bolt about its pivot; and acover plate havin a crank arm pivotally mounted thereon an acting tohold said plates in position in said I a casing, each of said crank armsmaking detachable connection with said auxiliary sliding plate.

56. A lock casing having a front wall, an

end wall with an opening therein, and being open at its back; a boltextendible out of the opening in said end wall; a crank arm pivot,- allymounted in said front wall and operable from the exterior of saidcasing; a main sliding plate slidably supported mlsaid casing and havingsaid bolt pivotally secured ther'eto; an auxiliary slidin plate in saidcasing, said auxiliary plate an said bolt having cam connections adaptedupon relative movement between said plates to swing said bolt about itspivot; and a cover plate having a crank arm pivotally mounted thereonand acting to hold said plates in position in said casing, saidauxiliary sliding plate being provided with a transversely extendingslot with which the end portions of each of said crank arms 11 0 makedetachable connection.

57. A lockcasing having an end wall provided with an opening and beingopen at its back; a bolt extendible out of said casin and through saidopening in the end wall t erea main of; guide-portions in said casing;

ide-

sliding plate slidably guided by said portions andhaving said boltpivota 3 sesli a cured thereto; an auxiliary plate ble relative to saidmain plate, said auxiliary plate and said bolt having ooacting camportions adapted, upon relative movement between said plates to effectmovement of said bolt about its pivot; spring means for insur-' ing thecompletion of the relative movement between said plates; and a coverplate attachable to said casing for holding said main sliding plate inoperative relation to said guideportions.

A look casing having a front wall an crank arm; and a 70 60. A lockcasing having a each provided with a latera end wall with an openingtherein,

only throughout a portion of an bo and being open at its back; a boltextendible out of the opening in said end wall; a crank armpivotallymounted in said front wall and operable from the exterior of saidcasing; a main sliding plate slidably supported in said casing and avingsaid bolt pivotally secured thereto an auxiliary sliding plate in saidcasing, said auxiliary plate and said bolt having cam connectionsadapted upon relative movement between said plates to swing said boltabout its pivot; a spring arranged to react between said casing and saidcrank arm to cause the completion of the oscillating movements of thelatter; and a cover plate attachable to said casing and acting to holdsaid plates in position in said casing. 59. A lock casing having apairof bolts each provided with a lateral projection, ada ted to be extendedout of an end wall of sai casing; ported within said casing and havingsaid olts pivotally secured thereto; an auxiliary late slidable relativeto said main plate and having an extension extending lengthwise of saidbolts and substantially in a plane intermediate of said bolts, saidbolts and said ex-.

tension having coacting portions adapted upon relative movement betweensaid auxiliary plate and said boltsto swing the latter about theirpivots; operating means for moving said auxiliary plate; and means forcausing said main plate to move therewith but the range of. movementofsaid auxiliary plate.

air of bolts, projection, adapted to be extended out of an end wall ofsaid casing; a main sliding plate slidably portedwithin said casing andhaving said ts pivotally plate slidable relative to said main plate andaving an extension extending lengthwise of said bolts and substantiallyin a plane intermediate of said bolts, said bolts and said extensionhaving coacting portions adapted upon relative movement between saidauxiliary plate and said bolts about their pivots; operating means forcon,-

Q supported within said casing trolling the operation of-saidboltsin'either locln'ng orunlocking direction; and means responsive tosaid operating means for cause ing said two plates to move together andthen said auxiliary' plate relative to the main plate when operating inlocking direction and 'for causing first a movement of said auxiliaryplate relative to said main plate andthen a movement of both platestogether when operating in unlocking direction.

' 61.' A lock casing having a pair of bolts, each provided with. alateral projection, adapted to be extended out of an end wall of saidcasing; a main sliding plate slidably and having said bolts pivotallysecured thereto; an auxiliary a main sliding plate slidably supsecuredthereto; an auxiliary to swing the latterplate slidable relative to saidmain plate and aving an extension extending lengthwise of said bolts andsubstantially in a plane intermediate of said bolts, said bolts and saidextension having coacting portions adapted upon relative movementbetween said auxiliary plate and said bolts to swing the latter abouttheir pivots; a crank arm operable from adapted to receive a laterallydirected lug upon the outer end of the bolt; and bolt extending androtating means, said means including a sliding and reciprocable platehaving a spiral connection with said bolt and adapted uponrelativemovement between the bolt and itself to rotate the bolt, saidplate having a slot extendingsub stantially transversely of the axis ofsaid bol-t, a crank rotatably mounted in said front. plate and having acrank pinextending through said slot in said slidable plate, a crankrotatably mounted in said back plate and having a crank pin meansforming a detachable connection beupon the end thereof. a

tween said last-mentioned crank pin and said slidable plate, aprojection upon a portion of said bolt that is within said casing, andmeans including a plate member supported by one of said casing platesfor controlling the forward direction of movement of said bolt, said.plate member being shaped to restrain rotationof moved out of the casingto a predetermined extent and thereafter to permit rotation of the boltto take place in response to relative movement between said slidableplate and said bolt. 63. A look casing having a. front plate, a detachable back plate, and an end wall pro vided with an'opening havingarcuate portions for rotatably supporting a bolt of round cross-sectionand a" recess adapted to receive a laterally directedlugupon the outerend of the bolt; and bolt extending and rotating means saidmeansincluding a sliding and reciprocable plate having a spiralconnection with said bolt and adapted upon relative movement between thebolt and. itself to ro tate the bolt, said plate having a slot extendingsubstantially transversely of the axis of I said bolt, acrank rotatablymounted in said front plate and having a crank in extend ing throughsaid slot in said sli a crank rotatably mounted in said back'platef andhaving a crank pin upon theend thereof, means forming a vdetachable.connection be tween said last-mentioned'crank pin and said slidableplate, a pr'ojection'upon a portion of said bolt that is within saidcasing, means able plate, V

including a plate member supported by one of said casing plates forcontrolling the forward direction of movement of said bolt, said nected;an auxiliary sliding plate member being shaped to restrain rotation ofsaid bolt until the latter has been moved out of the casing to apredetermined extent and thereafter to permit rotation of .the bolt totake place in response to relative movement between said slidable plateand said bolt; and spring means for causing the completion of thereciprocating movements of said sliding plate.

64. A lock casing having a rotatable bolt extendible out of" saidcasing; a main sliding plate with which said bolt is spiral connectionwith said olt, said jcon nection comprising a spiral guideway on saidbolt and an extension on said auxiliary plate engaging therewith; and alocking plate for ho d1 ng said rotatable connection and said spiralconnection intact.

65. A lock casing having a rotatable bolt extendible out of said casing;a main sliding ward "end provided with a slot-like recess,

said bolt having a restricted portion intervmediate its ends for fittinginto said recess;'

and a locking plate secured to said sliding plate and having an openingtherein for receiving the inner end portion of said bolt, thereby toprevent the latter from moving laterally out of said recess.

66'. A lock casing having aurotatablebolt member extendible out of saidcasing; a slidin plate member within said casing, one of said membershaving a spiral slot and the other having a projection adapted to rideinsaid slot upon relative lengthwise movement between-said members; andmeans for preventing disengagement of said projection from said slotcomprising a'plate shaped to prevent relative lateral movement of one ofsaid members away from the other.

67. A look casing having a rotatable bolt member extendible out ofsaidcasing; a slidin plate member within said casing, one of saldmembers other having a projection adapted to ride in said slot uponrelative lengthwise movement between said members, said plate memberbeing shaped to assist in rotatablysup orting said bolt; and a lockingplate shape. to coact in rotatablysupporting said bolt and to a holdsaid two members against relative lateral displacement for preventing;disenvage-' ment of said projection from said spirafslot- 68. .A lockcasing having a rotatablebolt member extendible out of said casing; asliding plate member within said casing, one 0 other having a projectionadapted toride in saidslot upon relative len thwise movement betweensaid members, sai plate member'being shaped to assist in rotatablysupporting rotatably con-. plate having a plate having an upstandingflange" at its forhaving aspiral slot and the f: ment of the bolt, saidmembers having a-spiral slot and the said bolt; a locking plate shapedto coact in rotatably supporting said bolt and to hold said two membersagainst relative lateral displacement for preventing disengagement ofsaid projection from said s iral. slot; and means detachably holding sailocking late in position, thereby to permit disassembl said members.

69. A look casing having a rotatable bolt member extendible out of saidcasing; a sliding platemember within said casing; one of Silld membershaving a spiral slot and the other having a projection adapted to ridein said slot upon relative lengthwise movement between said members;said plate member having an arcuate portion against which said boltrests for rotatable support; and a locking plate having an arcuateportion for engagement with. said bolt andformin with said other arcuateportion a bearing for rotatably supporting said bolt, said locking plateacting thereby to prevent lateral displacement of said bolt from saidplate member andthus to prevent disengagement of said projectionfromsaid slot.

' 70. A look casing having a substantially cylindrical rotatable boltmember .extendible out of said casing; a sliding plate member having aspiral connection with. said bolt member for rotating the same uponrelative movement therebetween, said connect-ion comprising a spiralslot in one of said members and a P1'0]B6t1011 on the other memberengaged therewithg'means including a plate for controllin the forwarddirection of movement of the bolt member and with respect to which platesaid plate member is slidable, said plate having a portion for assistingin rotatablysupporting said bolt member and to prevent relative lateraldisplacement between said two members, thereby, to hold said spiralconnection int-act.

71. A lockcasing having a rotatable .bolt

extendible out of said casing; means including a sliding plateforcontrolling theforward direction of movement of the bolt, said platehaving bearing means for rotatably su porting the bolt and adapted tocarry said bo t forward upon movement of said plate; anda sliding latehaving a spiral connection relative movement therebetween.

72. A look having a rota-t ble bolt extendible outof the lock casing, asliding plate movable with said bolt and having a spiral connection withsaid bolt for rotating-the therebetween, means including a plate forcontrolling the forward direction of move s aid bolt being rotatablewith respect to said second-mentioned plate,

same upon relative lengthwise movements'aid second-mentioned plate beingcon-' structed to prevent relativelengthwise movement between saidsliding plate and said bolt until'both sliding plate and bolt have 15with said be t for rotating the same upon lating said crank togethermoved a forwardly.

73. A locking having a bolt, means including a plate for controlling theforward direction of movement of the bolt, and a plate ha ring a spiralconnection with said bolt for rotating the same, said secondmentioncdplate being slidable relative to said firstmentioned plate. p

74;. A lock casing having a rotatable bolt extendible out of saidcasing, said bolthaving a portion adj acentits inner endof reduceddiameter; a sliding plate within said casing; means for actuating saidsliding plate; a locking plate engaging said reduced portion of saidbolt for holding the latter rotatably in assembled relation with respectto said sliding plate; and means for efl'ecting rotation of said bolt.

75. A look casing having a rotatable bolt extendible out of said casing,said bolt having a portion adjacent its inner end of reduced diameter; asliding plate within said casing; means for actuating said sliding platea locking plate engaging said reduced portion of said bolt for holdingthe latter rotatably in assembled relation with respect to said slidingplate; and cam means having two coacting portions, one of which is uponsaid bolt, for rotating the latter upon relative movement therebetween.

76. A lock casing having a rotatable bolt extcndible out of the casing;two sliding plates within said casing; means for pivotally securing saidbolt to one of said plates; means forming a connection between the otherof saidplates and said bolt adapted upon relati e movement therebetweento rotate said bolt; and actuating means operapredetermiued distancetive upon said plates and related to the latter to permit successiveconjoint and relative movements of said plates to take place.

77. A lock casing having a rotatable bolt extendible out of the casingyasliding plate within said casing; means associated with said plate forrotatably supporting said bolt; a n'lembericarried by said sliding plateand movably mounted relative thereto; means forming a connection betweensaid bolt and said member and adapted upon movement of said memberrelative to said late to rotate said bolt; a crank operable ii'om theexterior of said casing; and means operatively reto said sliding plateand to said-member so that said crank first causes sliding movement ofsaid plate with said member relative to said casing, thereby to movesaid bolt in the direction of its axis, and then causes movement of saidmember relative to said sliding plate, thereby to rotate said bolt.

78. A. lock oasin having a rotatable. bolt extendible out. of thecasing; a sliding plate within said casing; means associated with saidplate for rotatably supporting said bolt;

plates within said casing;

a member carried by said sliding plate and movably mounted relativethereto; means forming a connection between said bolt and said memberand adapted upon movement of said member relative to said plate torotate said bolt; a crank arm operable from the exterior of said casinand connected to cause sliding movement or said sliding plate to takeplace, thereby to move said bolt in the direction of its axis; andconnections between said crank arm and said member for causing theformer to move the latter relative to said plate but only during aportion of the rotation of said crank arm, thereby to rotate said bolt.

7 9. A look casing having a rotatable bolt extendible out of the casing;within said casing; means associated with said plate for rotatablysupporting said bolt; a member carried by said sliding plate and movablymounted relative thereto; means forming-a connection between said boltand said member and adapted upon movement of said member relative tosaid plate to rotate said bolt; actuating means operable from theexterior of said casing'for actuating said sliding plate and saidmember; and means forming connections between said actuating means andsaidsliding plate andsaid relatively movable member for causing bothplate a and member to move conjointly and for causing relative movementtherebetween, said means including a lost motion connection.-

80. A lock casing having a rotatable bolt extendable out of the casing;two sliding means for pivota sliding plate ally holding said boltrelative to one of said plates; means'forming aconnection between theother of said plates and said bolt adapted upon relative movementtherebetween to rotate said bolt, one of said plates having a-slot; andactuating mechanism operable from the exterior of said casing and havingmeans passing through said slot for movin the slotted plate, said twosliding-plates eing related to each other and to said means so that thelatter, during a portion of its relative movement along said slot,causes move.- ment of said other sliding plate.

81. A look casing having a rotatable bolt 'extendible out of the casing;two sliding plates within said casing; means for pivotally holding saidbolt relative to one of said plates; means forming a connection betweenthe other of said plates and said bolt adapted upon relative movementtherebetween to rotate said bolt, one of said plates having a slot; acrank operable from the exterior of said casing and having meansextending through said slot sufiioiently to permit engagement with theother plate, said means operating upon said last-mentioned other plateduring a portion of its movement by said crank. a

82. lock casing having a rotatable bolt extendible out of the casing; a,slidin plate within said casing; means associat with said plate forrotatably supporting said bolt a member carried by said sliding plateand said casing and 1 said sliding plate.

v and said member, said means ing aportion of the movement of rotatlonof movably mounted relative thereto; means forming a connection betweensaid bolt and said member and adapted upon movement of said memberrelative to said plate to rotate said bolt; said sliding late having aslot; and a crank operable rom the exterior of carrying means engagingsaid slotfor moving both said slotted plate operatin dursaid crank tomove said member relative to 83. A look casing having a rotatable bolt,extendible out of the casing; a sliding plate within said casing; meansassociated with said plate forrotatably supporting said bolt; a membercarried by said sliding plate and movably mounted relative thereto;means forming a connection between said bolt and said member and adaptedu on movement of said member relative to sai. plate to rotate said boltsaid sliding plate having a slot;

' and a crank-operable from the exterior of said casing and carryingmeans engaging said slot for moving both said slotted. plate" and saidmember, said member having a cut-away portion and said crank-operatedmeans being adapted, by coaction with said cut-away portion; to movesaid member relative to said A i a 3 0t being shaped so movement of saidslotted plate duringa portion 'of'the rotary movement of said crank.

84:. Alock casing having a rotatable bolt extendible out of the casing;a sliding plate within said casing; means for pivotally securing saidbolt to said plate; a crank operable from theexterior ofsaid casing andcar rying operating means at its outer end; said sliding plate havin oerating means 0 that said crank and plate during a part of the rotarycrank and to permit the operatingmeans of travel together therotamovement ofsaidcrank; an auxiliary sli giplate-carried by said firstsliding late'an to t e first sliding plateby said operating meansdurmg'the' relative movement of the.

latter with respect to said first sliding plate;

and connections between said sliding plate and said bolt for rotatingthe latter.

.. 85. A lock casin having a rotatable bolt extendible out ofi t ecasing; asliding-plalte. within-said casing; means for pivotally se-"cur-in saidbolt to saidplate; a crank oper-t able om' the exterior ofsaid casing and caroperating means at its outer end; said a slot withwhich said saidcrank coacts, said said crank to move relay tiveto saidplate 'during another portion of connected to be moved relative operablefrom the sliding plate havin a slot with which said operating means 0slot being shaped so that said crank and plate said crank coacts,saidtravel together during a part of. the rotary -movement of said crankand to permit the crank to move rela-' portionof I responsive to therelative movement between said operating means carriedby said 0 cratingmeans of said two to said plate during another the rotary movement ofsaid, crank; and

means crank for rotating the bolt. v

86. 'A lock casing having a rotatable bolt extendible' out of thecasing; two sliding plates within said casing; ,means for pivotallyholding said bolt relative to one of said plates; means forming aconnection between the other ofsaid plates and saidbolt adapted uponrelative movement therebetween to rotate said bolt, one of said platesbeing slotted; and a crank operable from theexterior of said casingandhaving means .{01

coactingwith said'slot for moving one of said plates, said crank beingrelated to the other of said plates so that t said crank during aportion of the'relative movement of said crank along said slot.

87-. A lock casing having e latter is moved by a rotatable bolt.

extendible out of the casmg; two sliding .90

plates within said casin means for pivotally holding-said bolt re ativeto one of said plates; means forming alconnection between the other ofsaid plates and said bolt adapted upon relative movement therebetweentorotate said bolt; means operable from the exterior of said casing formoving said other Y of said plates; and means preventing relativemovement between said bolt and said other plate until the bolt has beenextended sufli eientlyout of said casing and acting to cause saidoperating means said plates together. i

8 8. A look casing having a rotatable bolt extendible out of the casingin the direction rection of movement of said bolt; an auxiliarysliding-plate carried by said main sliding plate and aving connectionswith said. bolt adapted upon relative movement therebeto first move bothof tween to rotate said bolt; operating means exterior of saidcasing'a-nd having connection with said auxiliary sliding plate; andmeans for preventing relative movement between said auxiliary slidingplate and said bolt until the bolt has been'extended sufiiciently out ofsaid casing and acting'to cause said main sliding plate to movewith saidau'xilia sliding plate.

. In testimony w ereoi, I ave signed my name to this specification, this23rd day of 1 A July 1927. a a

. HERMAN HANSEN) 105 ofthe axis of rotation of said bolt; a mainsli'dingplate for controlling the forward di-

